public class Pair<F, S> {
	F first;
	S second;

	public Pair(F f, S s) {
		first = f;
		second = s;
	}

	public void setFirst(F f) {
		first = f;
	}

	public F getFirst() {
		return first;
	}

	public void setSecond(S s) {
		second = s;
	}

	public S getSecond() {
		return second;
	}
}
